Beginning at the top left side, fold the first square down toward you “on top” of the square below it, and crease the fold.

Continue folding this row “accordion style” until you reach the bottom,
creasing the folds as you go. At the bottom, fold it underneath the
second row and continue on up this row, accordion-style, to the top,
folding the top square underneath the third row, folding this third row
same as the first row, and finishing the fourth row the same as the
second row. You should now have a neat, tidy 3×3-inch stack of pages.

If you stand up your pages, you will see a “wing” as your first and last
page. These will be used to attach the pocket pages to the cover. The
first fold is on the side with a top opening. Glue/tape the bottom
together to form your first pocket (top-loading pocket).Place tape to
the back fold section to help hold the binding together.